Intel Xeon X5660 SLBV6 2.8GHz 12 MB LGA 1366 Six Core CPU Processor 675901039154 | eBay
Amazon.com: ASUS ROG Dominus Extreme Intel LGA 3647 for Xeon W-3175X (C621) 12 DIMM DDR4 M.2 U.2 EEB Performance Motherboard with Aquantia 10G LAN, USB 3.1 : Electronics
Amazon.com: ASUS WS C621E Sage Extreme Power Intel® Xeon® Processor Workstation Motherboard for Two-way XEON CPU performance, with U.2, M.2 connectors, dual Gb LAN, USB 3.1 Type-C & Type-A, 10 x SATA